XGY   Grimsby Mountain, ON Weather Observed At   43-11  N    79-34  W

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*** AURBO MAGENTA Advisory In Effect ***

2026-08-02	4:00pm			Max		Min
Weather		----
Temperature		18.6 °C		21.1 °C	1:48pm	18.6 °C	3:53pm
Relative Humidity		95 %		95 %	8:35am	89 %	12:00am
Dew Point		17.8 °C		20.6 °C	1:48pm	17.8 °C	3:24pm
Wind Velocity		5 ° at  2.3 G 12.2 kt		15.7 kt	12:15pm
Pressure		29.723 "  ↓		29.841 "	1:13am	29.707 "	3:23pm
Rainfall Rate		11.4 mm/h		172.0 mm/h	12:02pm
Snow On Ground		0 cm
Brightness / Darkness		26 W/m² /  0.00 m/"²		545 W/m²	1:47pm	18.18 m/"²	3:27am
Remarks

Rainfall	Today	48.0 mm	Storm Total	48.0 mm
Snowfall	Today	0.0 cm	Storm Total	0.0 cm

Evapotranspiration

Today

-0.51 mm

Lake Conditions

Water Temperature  17.6 °C

Waves  2½ '

ICE FREE

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Meteor Index	91   Perseids
Aurora Index / Solar	142   Moderate Storm   + 0 nT	Solar Flux   140  sfu  /   S 0    G 2    R 0   /  MUF   26.2 MHz

Sunrise	6:10am	Sunset	8:39pm
Moonrise	N/A	Moonset	N/A	Moon Phase	Waning Gibbous

Grimsby Mountain Weather Maps
Local	Regional	Area	Synoptic
updated H+09 and every 10m	updated H+19 and H+49	updated H+19

Ontario 6-Hour Meteorological Summary

Canadian 6-Hour Meteorological Summaries

CLIMAT Data
Official	Yesterday					2004	2005	2006	2007	2008	2009	Normals & Records
		2010	2011	2012	2013	2014	2015	2016	2017	2018	2019
		2020	2021	2022	2023	2024	2025	2026

Grimsby Mountain Charts

	Sky Quality (Darkness) Meter courtesy of

              

Wx Map	Sat Pix	IR Sat Pix	Radar	Lightning
	Water	Ice

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  This is a privately operated weather station that is part of the Meteorological Service of Canada's official observing network.
Permission to publish the weather statistics found on this website is not required.
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